He hath cast me into the mire. — He now turns more directly to God, having in Job 30:16 turned from man to his own condition — dust and ashes. This latter phrase is used but three times in Scripture: twice by Job (here and Job 42:6), and once by Abraham (Genesis 18:27).
Related Commentaries of Job 30:19
Job 30:19
19 He hath cast me into the mire, and I am become like dust and ashes.